retain-release.m revision 93edbc5269c166e3ab50ccb323b934c7bdf07c3c 
1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,osx.coreFoundation.CFRetainRelease,osx.cocoa.ClassRelease,osx.cocoa.RetainCount -analyzer-store=region -fblocks -verify %s
2// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,osx.coreFoundation.CFRetainRelease,osx.cocoa.ClassRelease,osx.cocoa.RetainCount -analyzer-store=region -fblocks -verify -x objective-c++ %s
3
4#if __has_feature(attribute_ns_returns_retained)
5#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained))
6#endif
7#if __has_feature(attribute_cf_returns_retained)
8#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
9#endif
10#if __has_feature(attribute_ns_returns_not_retained)
11#define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained))
12#endif
13#if __has_feature(attribute_cf_returns_not_retained)
14#define CF_RETURNS_NOT_RETAINED __attribute__((cf_returns_not_retained))
15#endif
16#if __has_feature(attribute_ns_consumes_self)
17#define NS_CONSUMES_SELF __attribute__((ns_consumes_self))
18#endif
19#if __has_feature(attribute_ns_consumed)
20#define NS_CONSUMED __attribute__((ns_consumed))
21#endif
22#if __has_feature(attribute_cf_consumed)
23#define CF_CONSUMED __attribute__((cf_consumed))
24#endif
25
26//===----------------------------------------------------------------------===//
27// The following code is reduced using delta-debugging from Mac OS X headers:
28//
29// #include <Cocoa/Cocoa.h>
30// #include <CoreFoundation/CoreFoundation.h>
31// #include <DiskArbitration/DiskArbitration.h>
32// #include <QuartzCore/QuartzCore.h>
33// #include <Quartz/Quartz.h>
34// #include <IOKit/IOKitLib.h>
35//
36// It includes the basic definitions for the test cases below.
37//===----------------------------------------------------------------------===//
38
39typedef unsigned int __darwin_natural_t;
40typedef unsigned long uintptr_t;
41typedef unsigned int uint32_t;
42typedef unsigned long long uint64_t;
43typedef unsigned int UInt32;
44typedef signed long CFIndex;
45typedef struct {
46    CFIndex location;
47    CFIndex length;
48} CFRange;
49static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) {
50    CFRange range;
51    range.location = loc;
52    range.length = len;
53    return range;
54}
55typedef const void * CFTypeRef;
56typedef const struct __CFString * CFStringRef;
57typedef const struct __CFAllocator * CFAllocatorRef;
58extern const CFAllocatorRef kCFAllocatorDefault;
59extern CFTypeRef CFRetain(CFTypeRef cf);
60extern void CFRelease(CFTypeRef cf);
61typedef struct {
62}
63CFArrayCallBacks;
64extern const CFArrayCallBacks kCFTypeArrayCallBacks;
65typedef const struct __CFArray * CFArrayRef;
66typedef struct __CFArray * CFMutableArrayRef;
67extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks);
68extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx);
69extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value);
70typedef struct {
71}
72CFDictionaryKeyCallBacks;
73extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks;
74typedef struct {
75}
76CFDictionaryValueCallBacks;
77extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks;
78typedef const struct __CFDictionary * CFDictionaryRef;
79typedef struct __CFDictionary * CFMutableDictionaryRef;
80extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks);
81typedef UInt32 CFStringEncoding;
82enum {
83kCFStringEncodingMacRoman = 0,     kCFStringEncodingWindowsLatin1 = 0x0500,     kCFStringEncodingISOLatin1 = 0x0201,     kCFStringEncodingNextStepLatin = 0x0B01,     kCFStringEncodingASCII = 0x0600,     kCFStringEncodingUnicode = 0x0100,     kCFStringEncodingUTF8 = 0x08000100,     kCFStringEncodingNonLossyASCII = 0x0BFF      ,     kCFStringEncodingUTF16 = 0x0100,     kCFStringEncodingUTF16BE = 0x10000100,     kCFStringEncodingUTF16LE = 0x14000100,      kCFStringEncodingUTF32 = 0x0c000100,     kCFStringEncodingUTF32BE = 0x18000100,     kCFStringEncodingUTF32LE = 0x1c000100  };
84extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding);
85typedef double CFTimeInterval;
86typedef CFTimeInterval CFAbsoluteTime;
87extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void);
88typedef const struct __CFDate * CFDateRef;
89extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
90extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
91typedef __darwin_natural_t natural_t;
92typedef natural_t mach_port_name_t;
93typedef mach_port_name_t mach_port_t;
94typedef int kern_return_t;
95typedef kern_return_t mach_error_t;
96enum {
97kCFNumberSInt8Type = 1,     kCFNumberSInt16Type = 2,     kCFNumberSInt32Type = 3,     kCFNumberSInt64Type = 4,     kCFNumberFloat32Type = 5,     kCFNumberFloat64Type = 6,      kCFNumberCharType = 7,     kCFNumberShortType = 8,     kCFNumberIntType = 9,     kCFNumberLongType = 10,     kCFNumberLongLongType = 11,     kCFNumberFloatType = 12,     kCFNumberDoubleType = 13,      kCFNumberCFIndexType = 14,      kCFNumberNSIntegerType = 15,     kCFNumberCGFloatType = 16,     kCFNumberMaxType = 16    };
98typedef CFIndex CFNumberType;
99typedef const struct __CFNumber * CFNumberRef;
100extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);
101typedef const struct __CFAttributedString *CFAttributedStringRef;
102typedef struct __CFAttributedString *CFMutableAttributedStringRef;
103extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ;
104extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ;
105extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ;
106typedef signed char BOOL;
107typedef unsigned long NSUInteger;
108@class NSString, Protocol;
109extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
110typedef struct _NSZone NSZone;
111@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
112@protocol NSObject
113- (BOOL)isEqual:(id)object;
114- (id)retain;
115- (oneway void)release;
116- (id)autorelease;
117- (id)init;
118@end  @protocol NSCopying  - (id)copyWithZone:(NSZone *)zone;
119@end  @protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone;
120@end  @protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder;
121@end
122@interface NSObject <NSObject> {}
123+ (id)allocWithZone:(NSZone *)zone;
124+ (id)alloc;
125- (void)dealloc;
126@end
127@interface NSObject (NSCoderMethods)
128- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder;
129@end
130extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
131typedef struct {
132}
133NSFastEnumerationState;
134@protocol NSFastEnumeration  - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
135@end           @class NSString, NSDictionary;
136@interface NSValue : NSObject <NSCopying, NSCoding>  - (void)getValue:(void *)value;
137@end  @interface NSNumber : NSValue  - (char)charValue;
138- (id)initWithInt:(int)value;
139@end   @class NSString;
140@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
141@end  @interface NSArray (NSArrayCreation)  + (id)array;
142@end       @interface NSAutoreleasePool : NSObject {
143}
144- (void)drain;
145@end extern NSString * const NSBundleDidLoadNotification;
146typedef double NSTimeInterval;
147@interface NSDate : NSObject <NSCopying, NSCoding>  - (NSTimeInterval)timeIntervalSinceReferenceDate;
148@end            typedef unsigned short unichar;
149@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>
150- (NSUInteger)length;
151- (NSString *)stringByAppendingString:(NSString *)aString;
152- ( const char *)UTF8String;
153- (id)initWithUTF8String:(const char *)nullTerminatedCString;
154+ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
155@end        @class NSString, NSURL, NSError;
156@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding>  - (NSUInteger)length;
157+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length;
158+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b;
159@end   @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary;
160@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
161@end    @interface NSMutableDictionary : NSDictionary  - (void)removeObjectForKey:(id)aKey;
162- (void)setObject:(id)anObject forKey:(id)aKey;
163@end  @interface NSMutableDictionary (NSMutableDictionaryCreation)  + (id)dictionaryWithCapacity:(NSUInteger)numItems;
164@end  typedef double CGFloat;
165struct CGSize {
166};
167typedef struct CGSize CGSize;
168struct CGRect {
169};
170typedef struct CGRect CGRect;
171typedef mach_port_t io_object_t;
172typedef char io_name_t[128];
173typedef io_object_t io_iterator_t;
174typedef io_object_t io_service_t;
175typedef struct IONotificationPort * IONotificationPortRef;
176typedef void (*IOServiceMatchingCallback)(  void * refcon,  io_iterator_t iterator );
177io_service_t IOServiceGetMatchingService(  mach_port_t masterPort,  CFDictionaryRef matching );
178kern_return_t IOServiceGetMatchingServices(  mach_port_t masterPort,  CFDictionaryRef matching,  io_iterator_t * existing );
179kern_return_t IOServiceAddNotification(  mach_port_t masterPort,  const io_name_t notificationType,  CFDictionaryRef matching,  mach_port_t wakePort,  uintptr_t reference,  io_iterator_t * notification ) __attribute__((deprecated));
180kern_return_t IOServiceAddMatchingNotification(  IONotificationPortRef notifyPort,  const io_name_t notificationType,  CFDictionaryRef matching,         IOServiceMatchingCallback callback,         void * refCon,  io_iterator_t * notification );
181CFMutableDictionaryRef IOServiceMatching(  const char * name );
182CFMutableDictionaryRef IOServiceNameMatching(  const char * name );
183CFMutableDictionaryRef IOBSDNameMatching(  mach_port_t masterPort,  uint32_t options,  const char * bsdName );
184CFMutableDictionaryRef IOOpenFirmwarePathMatching(  mach_port_t masterPort,  uint32_t options,  const char * path );
185CFMutableDictionaryRef IORegistryEntryIDMatching(  uint64_t entryID );
186typedef struct __DASession * DASessionRef;
187extern DASessionRef DASessionCreate( CFAllocatorRef allocator );
188typedef struct __DADisk * DADiskRef;
189extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name );
190extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media );
191extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk );
192extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk );
193@interface NSTask : NSObject - (id)init;
194@end                    typedef struct CGColorSpace *CGColorSpaceRef;
195typedef struct CGImage *CGImageRef;
196typedef struct CGLayer *CGLayerRef;
197@interface NSResponder : NSObject <NSCoding> {
198}
199@end    @protocol NSAnimatablePropertyContainer      - (id)animator;
200@end  extern NSString *NSAnimationTriggerOrderIn ;
201@interface NSView : NSResponder  <NSAnimatablePropertyContainer>  {
202}
203@end @protocol NSValidatedUserInterfaceItem - (SEL)action;
204@end   @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem;
205@end  @class NSDate, NSDictionary, NSError, NSException, NSNotification;
206@interface NSApplication : NSResponder <NSUserInterfaceValidations> {
207}
208@end   enum {
209NSTerminateCancel = 0,         NSTerminateNow = 1,         NSTerminateLater = 2 };
210typedef NSUInteger NSApplicationTerminateReply;
211@protocol NSApplicationDelegate <NSObject> @optional        - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
212@end  @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView;
213@interface NSCell : NSObject <NSCopying, NSCoding> {
214}
215@end @class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError;
216typedef struct {
217}
218CVTimeStamp;
219@interface CIImage : NSObject <NSCoding, NSCopying> {
220}
221typedef int CIFormat;
222@end  enum {
223kDAReturnSuccess = 0,     kDAReturnError = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x01,     kDAReturnBusy = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x02,     kDAReturnBadArgument = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x03,     kDAReturnExclusiveAccess = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x04,     kDAReturnNoResources = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x05,     kDAReturnNotFound = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x06,     kDAReturnNotMounted = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x07,     kDAReturnNotPermitted = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x08,     kDAReturnNotPrivileged = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x09,     kDAReturnNotReady = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0A,     kDAReturnNotWritable = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0B,     kDAReturnUnsupported = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0C };
224typedef mach_error_t DAReturn;
225typedef const struct __DADissenter * DADissenterRef;
226extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
227@interface CIContext: NSObject {
228}
229- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r;
230- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r     format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs;
231- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d;
232@end extern NSString* const QCRendererEventKey;
233@protocol QCCompositionRenderer - (NSDictionary*) attributes;
234@end   @interface QCRenderer : NSObject <QCCompositionRenderer> {
235}
236- (id) createSnapshotImageOfType:(NSString*)type;
237@end  extern NSString* const QCViewDidStartRenderingNotification;
238@interface QCView : NSView <QCCompositionRenderer> {
239}
240- (id) createSnapshotImageOfType:(NSString*)type;
241@end    enum {
242ICEXIFOrientation1 = 1,     ICEXIFOrientation2 = 2,     ICEXIFOrientation3 = 3,     ICEXIFOrientation4 = 4,     ICEXIFOrientation5 = 5,     ICEXIFOrientation6 = 6,     ICEXIFOrientation7 = 7,     ICEXIFOrientation8 = 8, };
243@class ICDevice;
244@protocol ICDeviceDelegate <NSObject>  @required      - (void)didRemoveDevice:(ICDevice*)device;
245@end extern NSString *const ICScannerStatusWarmingUp;
246@class ICScannerDevice;
247@protocol ICScannerDeviceDelegate <ICDeviceDelegate>  @optional       - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner;
248@end
249
250typedef long unsigned int __darwin_size_t;
251typedef __darwin_size_t size_t;
252typedef unsigned long CFTypeID;
253struct CGPoint {
254  CGFloat x;
255  CGFloat y;
256};
257typedef struct CGPoint CGPoint;
258typedef struct CGGradient *CGGradientRef;
259typedef uint32_t CGGradientDrawingOptions;
260extern CFTypeID CGGradientGetTypeID(void);
261extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef
262  space, const CGFloat components[], const CGFloat locations[], size_t count);
263extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space,
264  CFArrayRef colors, const CGFloat locations[]);
265extern CGGradientRef CGGradientRetain(CGGradientRef gradient);
266extern void CGGradientRelease(CGGradientRef gradient);
267typedef struct CGContext *CGContextRef;
268extern void CGContextDrawLinearGradient(CGContextRef context,
269    CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint,
270    CGGradientDrawingOptions options);
271extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void);
272
273@interface NSMutableArray : NSObject
274- (void)addObject:(id)object;
275+ (id)array;
276@end
277
278
279//===----------------------------------------------------------------------===//
280// Test cases.
281//===----------------------------------------------------------------------===//
282
283CFAbsoluteTime f1() {
284  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
285  CFDateRef date = CFDateCreate(0, t);
286  CFRetain(date);
287  CFRelease(date);
288  CFDateGetAbsoluteTime(date); // no-warning
289  CFRelease(date);
290  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released}}
291  return t;
292}
293
294CFAbsoluteTime f2() {
295  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
296  CFDateRef date = CFDateCreate(0, t);  
297  [((NSDate*) date) retain];
298  CFRelease(date);
299  CFDateGetAbsoluteTime(date); // no-warning
300  [((NSDate*) date) release];
301  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released}}
302  return t;
303}
304
305
306NSDate* global_x;
307
308// Test to see if we supresss an error when we store the pointer
309// to a global.
310
311CFAbsoluteTime f3() {
312  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
313  CFDateRef date = CFDateCreate(0, t);  
314  [((NSDate*) date) retain];
315  CFRelease(date);
316  CFDateGetAbsoluteTime(date); // no-warning
317  global_x = (NSDate*) date;  
318  [((NSDate*) date) release];
319  t = CFDateGetAbsoluteTime(date);   // no-warning
320  return t;
321}
322
323//---------------------------------------------------------------------------
324// Test case 'f4' differs for region store and basic store.  See
325// retain-release-region-store.m and retain-release-basic-store.m.
326//---------------------------------------------------------------------------
327
328// Test a leak.
329
330CFAbsoluteTime f5(int x) {  
331  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
332  CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}}
333  
334  if (x)
335    CFRelease(date);
336  
337  return t;
338}
339
340// Test a leak involving the return.
341
342CFDateRef f6(int x) {  
343  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  // expected-warning{{leak}}
344  CFRetain(date);
345  return date;
346}
347
348// Test a leak involving an overwrite.
349
350CFDateRef f7() {
351  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  //expected-warning{{leak}}
352  CFRetain(date);
353  date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning {{leak}}
354  return date;
355}
356
357// Generalization of Create rule.  MyDateCreate returns a CFXXXTypeRef, and
358// has the word create.
359CFDateRef MyDateCreate();
360
361CFDateRef f8() {
362  CFDateRef date = MyDateCreate(); // expected-warning{{leak}}
363  CFRetain(date);  
364  return date;
365}
366
367__attribute__((cf_returns_retained)) CFDateRef f9() {
368  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // no-warning
369  int *p = 0;
370  // When allocations fail, CFDateCreate can return null.
371  if (!date) *p = 1; // expected-warning{{null}}
372  return date;
373}
374
375// Handle DiskArbitration API:
376//
377// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/
378//
379void f10(io_service_t media, DADiskRef d, CFStringRef s) {
380  DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}}
381  if (disk) NSLog(@"ok");
382  
383  disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}}
384  if (disk) NSLog(@"ok");
385
386  CFDictionaryRef dict = DADiskCopyDescription(d);  // expected-warning{{leak}}
387  if (dict) NSLog(@"ok"); 
388  
389  disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}}
390  if (disk) NSLog(@"ok");
391    
392  DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault,   // expected-warning{{leak}}
393                                                kDAReturnSuccess, s);
394  if (dissenter) NSLog(@"ok");
395  
396  DASessionRef session = DASessionCreate(kCFAllocatorDefault);  // expected-warning{{leak}}
397  if (session) NSLog(@"ok");
398}
399
400// Test retain/release checker with CFString and CFMutableArray.
401void f11() {
402  // Create the array.
403  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
404
405  // Create a string.
406  CFStringRef s1 = CFStringCreateWithCString(0, "hello world",
407                                             kCFStringEncodingUTF8);
408
409  // Add the string to the array.
410  CFArrayAppendValue(A, s1);
411  
412  // Decrement the reference count.
413  CFRelease(s1); // no-warning
414  
415  // Get the string.  We don't own it.
416  s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0);
417  
418  // Release the array.
419  CFRelease(A); // no-warning
420  
421  // Release the string.  This is a bug.
422  CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}}
423}
424
425// PR 3337: Handle functions declared using typedefs.
426typedef CFTypeRef CREATEFUN();
427CREATEFUN MyCreateFun;
428
429void f12() {
430  CFTypeRef o = MyCreateFun(); // expected-warning {{leak}}
431}
432
433void f13_autorelease() {
434  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
435  [(id) A autorelease]; // no-warning
436}
437
438void f13_autorelease_b() {
439  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
440  [(id) A autorelease];
441  [(id) A autorelease]; // expected-warning{{Object sent -autorelease too many times}}
442}
443
444CFMutableArrayRef f13_autorelease_c() {
445  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
446  [(id) A autorelease];
447  [(id) A autorelease]; 
448  return A; // expected-warning{{Object sent -autorelease too many times}}
449}
450
451CFMutableArrayRef f13_autorelease_d() {
452  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
453  [(id) A autorelease];
454  [(id) A autorelease]; 
455  CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object sent -autorelease too many times}}
456  CFRelease(B); // no-warning
457  while (1) {}
458}
459
460
461// This case exercises the logic where the leak site is the same as the allocation site.
462void f14_leakimmediately() {
463  CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}}
464}
465
466// Test that we track an allocated object beyond the point where the *name*
467// of the variable storing the reference is no longer live.
468void f15() {
469  // Create the array.
470  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
471  CFMutableArrayRef *B = &A;
472  // At this point, the name 'A' is no longer live.
473  CFRelease(*B);  // no-warning
474}
475
476// Test when we pass NULL to CFRetain/CFRelease.
477void f16(int x, CFTypeRef p) {
478  if (p)
479    return;
480
481  if (x) {
482    CFRelease(p); // expected-warning{{Null pointer argument in call to CFRelease}}
483  }
484  else {
485    CFRetain(p); // expected-warning{{Null pointer argument in call to CFRetain}}
486  }
487}
488
489// Test that an object is non-null after being CFRetained/CFReleased.
490void f17(int x, CFTypeRef p) {
491  if (x) {
492    CFRelease(p);
493    if (!p)
494      CFRelease(0); // no-warning
495  }
496  else {
497    CFRetain(p);
498    if (!p)
499      CFRetain(0); // no-warning
500  }
501}
502
503// Test basic tracking of ivars associated with 'self'.  For the retain/release
504// checker we currently do not want to flag leaks associated with stores
505// of tracked objects to ivars.
506@interface SelfIvarTest : NSObject {
507  id myObj;
508}
509- (void)test_self_tracking;
510@end
511
512@implementation SelfIvarTest
513- (void)test_self_tracking {
514  myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
515}
516@end
517
518// Test return of non-owned objects in contexts where an owned object
519// is expected.
520@interface TestReturnNotOwnedWhenExpectedOwned
521- (NSString*)newString;
522@end
523
524@implementation TestReturnNotOwnedWhenExpectedOwned
525- (NSString*)newString {
526  NSString *s = [NSString stringWithUTF8String:"hello"];
527  return s; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}}
528}
529@end
530
531// <rdar://problem/6659160>
532int isFoo(char c);
533
534static void rdar_6659160(char *inkind, char *inname)
535{
536  // We currently expect that [NSObject alloc] cannot fail.  This
537  // will be a toggled flag in the future.  It can indeed return null, but
538  // Cocoa programmers generally aren't expected to reason about out-of-memory
539  // conditions.
540  NSString *kind = [[NSString alloc] initWithUTF8String:inkind];  // expected-warning{{leak}}
541  
542  // We do allow stringWithUTF8String to fail.  This isn't really correct, as
543  // far as returning 0.  In most error conditions it will throw an exception.
544  // If allocation fails it could return 0, but again this
545  // isn't expected.
546  NSString *name = [NSString stringWithUTF8String:inname];
547  if(!name)
548    return;
549
550  const char *kindC = 0;
551  const char *nameC = 0;
552  
553  // In both cases, we cannot reach a point down below where we
554  // dereference kindC or nameC with either being null.  This is because
555  // we assume that [NSObject alloc] doesn't fail and that we have the guard
556  // up above.
557  
558  if(kind)
559    kindC = [kind UTF8String];
560  if(name)
561    nameC = [name UTF8String];
562  if(!isFoo(kindC[0])) // expected-warning{{null}}
563    return;
564  if(!isFoo(nameC[0])) // no-warning
565    return;
566
567  [kind release];
568  [name release]; // expected-warning{{Incorrect decrement of the reference count}}
569}
570
571// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming
572//  conventions with respect to 'return'ing ownership.
573@interface PR3677: NSObject @end
574@implementation PR3677
575+ (id)allocWithZone:(NSZone *)inZone {
576  return [super allocWithZone:inZone];  // no-warning
577}
578@end
579
580// PR 3820 - Reason about calls to -dealloc
581void pr3820_DeallocInsteadOfRelease(void)
582{
583  id foo = [[NSString alloc] init]; // no-warning
584  [foo dealloc];
585  // foo is not leaked, since it has been deallocated.
586}
587
588void pr3820_ReleaseAfterDealloc(void)
589{
590  id foo = [[NSString alloc] init];
591  [foo dealloc];
592  [foo release];  // expected-warning{{used after it is release}}
593  // NSInternalInconsistencyException: message sent to deallocated object
594}
595
596void pr3820_DeallocAfterRelease(void)
597{
598  NSLog(@"\n\n[%s]", __FUNCTION__);
599  id foo = [[NSString alloc] init];
600  [foo release];
601  [foo dealloc]; // expected-warning{{used after it is released}}
602  // message sent to released object
603}
604
605// From <rdar://problem/6704930>.  The problem here is that 'length' binds to
606// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to
607// reason about '($0 - 1) > constant'.  As a temporary hack, we drop the value
608// of '($0 - 1)' and conjure a new symbol.
609void rdar6704930(unsigned char *s, unsigned int length) {
610  NSString* name = 0;
611  if (s != 0) {
612    if (length > 0) {
613      while (length > 0) {
614        if (*s == ':') {
615          ++s;
616          --length;
617          name = [[NSString alloc] init]; // no-warning
618          break;
619        }
620        ++s;
621        --length;
622      }
623      if ((length == 0) && (name != 0)) {
624        [name release];
625        name = 0;
626      }
627      if (length == 0) { // no ':' found -> use it all as name
628        name = [[NSString alloc] init]; // no-warning
629      }
630    }
631  }
632
633  if (name != 0) {
634    [name release];
635  }
636}
637
638//===----------------------------------------------------------------------===//
639// <rdar://problem/6833332>
640// One build of the analyzer accidentally stopped tracking the allocated
641// object after the 'retain'.
642//===----------------------------------------------------------------------===//
643
644@interface rdar_6833332 : NSObject <NSApplicationDelegate> {
645    NSWindow *window;
646}
647@property (nonatomic, retain) NSWindow *window;
648@end
649
650@implementation rdar_6833332
651@synthesize window;
652- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
653 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}}
654
655 [dict setObject:@"foo" forKey:@"bar"];
656
657 NSLog(@"%@", dict);
658}
659- (void)dealloc {
660    [window release];
661    [super dealloc];
662}
663
664- (void)radar10102244 {
665 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 
666 if (window) 
667   NSLog(@"%@", window);    
668}
669@end
670
671//===----------------------------------------------------------------------===//
672// <rdar://problem/6257780> clang checker fails to catch use-after-release
673//===----------------------------------------------------------------------===//
674                                 
675int rdar_6257780_Case1() {
676  NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
677  NSArray *array = [NSArray array];
678  [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}}
679  [pool drain];
680  return 0;
681}
682
683//===----------------------------------------------------------------------===//
684// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs
685//===----------------------------------------------------------------------===//
686
687void rdar_6866843() {
688 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
689 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init];
690 NSArray* array = [[NSArray alloc] init];
691 [dictionary setObject:array forKey:@"key"];
692 [array release];
693 // Using 'array' here should be fine
694 NSLog(@"array = %@\n", array); // no-warning
695 // Now the array is released
696 [dictionary release];
697 [pool drain];
698}
699
700
701//===----------------------------------------------------------------------===//
702// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects
703//===----------------------------------------------------------------------===//
704
705typedef CFTypeRef OtherRef;
706
707@interface RDar6877235 : NSObject {}
708- (CFTypeRef)_copyCFTypeRef;
709- (OtherRef)_copyOtherRef;
710@end
711
712@implementation RDar6877235
713- (CFTypeRef)_copyCFTypeRef {
714  return [[NSString alloc] init]; // no-warning
715}
716- (OtherRef)_copyOtherRef {
717  return [[NSString alloc] init]; // no-warning
718}
719@end
720
721//===----------------------------------------------------------------------===//
722//<rdar://problem/6320065> false positive - init method returns an object
723// owned by caller
724//===----------------------------------------------------------------------===//
725
726@interface RDar6320065 : NSObject {
727  NSString *_foo;
728}
729- (id)initReturningNewClass;
730- (id)_initReturningNewClassBad;
731- (id)initReturningNewClassBad2;
732@end
733
734@interface RDar6320065Subclass : RDar6320065
735@end
736
737@implementation RDar6320065
738- (id)initReturningNewClass {
739  [self release];
740  self = [[RDar6320065Subclass alloc] init]; // no-warning
741  return self;
742}
743- (id)_initReturningNewClassBad {
744  [self release];
745  [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}}
746  return self;
747}
748- (id)initReturningNewClassBad2 {
749  [self release];
750  self = [[RDar6320065Subclass alloc] init];
751  return [self autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}}
752}
753
754@end
755
756@implementation RDar6320065Subclass
757@end
758
759int RDar6320065_test() {
760  RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning
761  [test release];
762  return 0;
763}
764
765//===----------------------------------------------------------------------===//
766// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 
767//  and claims the receiver
768//===----------------------------------------------------------------------===//
769
770@interface RDar7129086 : NSObject {} @end
771@implementation RDar7129086
772- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder {
773  [self release]; // no-warning
774  return [NSString alloc];  // no-warning
775}
776@end
777
778//===----------------------------------------------------------------------===//
779// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a
780//  retained object
781//===----------------------------------------------------------------------===//
782
783@interface RDar6859457 : NSObject {}
784- (NSString*) NoCopyString;
785- (NSString*) noCopyString;
786@end
787
788@implementation RDar6859457 
789- (NSString*) NoCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}}
790- (NSString*) noCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}}
791@end
792
793void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) {
794  [x NoCopyString]; // no-warning
795  [x noCopyString]; // no-warning
796  [NSData dataWithBytesNoCopy:bytes length:dataLength];  // no-warning
797  [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning
798}
799
800//===----------------------------------------------------------------------===//
801// PR 4230 - an autorelease pool is not necessarily leaked during a premature
802//  return
803//===----------------------------------------------------------------------===//
804
805static void PR4230(void)
806{
807  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning
808  NSString *object = [[[NSString alloc] init] autorelease]; // no-warning
809  return;
810}
811
812//===----------------------------------------------------------------------===//
813// Method name that has a null IdentifierInfo* for its first selector slot.
814// This test just makes sure that we handle it.
815//===----------------------------------------------------------------------===//
816
817@interface TestNullIdentifier
818@end
819
820@implementation TestNullIdentifier
821+ (id):(int)x, ... {
822  return [[NSString alloc] init]; // expected-warning{{leak}}
823}
824@end
825
826//===----------------------------------------------------------------------===//
827// <rdar://problem/6893565> don't flag leaks for return types that cannot be 
828//                          determined to be CF types
829//===----------------------------------------------------------------------===//
830
831// We don't know if 'struct s6893565' represents a Core Foundation type, so
832// we shouldn't emit an error here.
833typedef struct s6893565* TD6893565;
834
835@interface RDar6893565 {}
836-(TD6893565)newThing;
837@end
838
839@implementation RDar6893565
840-(TD6893565)newThing {  
841  return (TD6893565) [[NSString alloc] init]; // no-warning
842}
843@end
844
845//===----------------------------------------------------------------------===//
846// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods
847//===----------------------------------------------------------------------===//
848
849void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context,
850                 NSString *str, CIImage *img, CGRect rect,
851                 CIFormat form, CGColorSpaceRef cs) {
852  [view createSnapshotImageOfType:str]; // expected-warning{{leak}}
853  [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}}
854  [context createCGImage:img fromRect:rect]; // expected-warning{{leak}}
855  [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}}
856}
857
858//===----------------------------------------------------------------------===//
859// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:]
860//                           misinterpreted by clang scan-build
861//===----------------------------------------------------------------------===//
862
863void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) {
864  [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}}
865}
866
867//===----------------------------------------------------------------------===//
868// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 
869//                          checker
870//===----------------------------------------------------------------------===//
871
872void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options,  const char * bsdName) {  
873  IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}}
874}
875
876void IOServiceMatching_wrapper(const char * name) {
877  IOServiceMatching(name); // expected-warning{{leak}}
878}
879
880void IOServiceNameMatching_wrapper(const char * name) {
881  IOServiceNameMatching(name); // expected-warning{{leak}}
882}
883
884CF_RETURNS_RETAINED CFDictionaryRef CreateDict();
885
886void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType,
887  mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) {
888
889  CFDictionaryRef matching = CreateDict();
890  CFRelease(matching);
891  IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}}
892                           wakePort, reference, notification);
893}
894
895void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) {
896  IORegistryEntryIDMatching(entryID); // expected-warning{{leak}}
897}
898
899void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options,
900                                        const char * path) {
901  IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}}
902}
903
904void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) {
905  CFDictionaryRef matching = CreateDict();
906  IOServiceGetMatchingService(masterPort, matching);
907  CFRelease(matching); // expected-warning{{used after it is released}}
908}
909
910void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) {
911  CFDictionaryRef matching = CreateDict();
912  IOServiceGetMatchingServices(masterPort, matching, existing);
913  CFRelease(matching); // expected-warning{{used after it is released}}
914}
915
916void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 
917  IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) {
918    
919  CFDictionaryRef matching = CreateDict();
920  IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification);
921  CFRelease(matching); // expected-warning{{used after it is released}}
922}
923
924//===----------------------------------------------------------------------===//
925// Test of handling objects whose references "escape" to containers.
926//===----------------------------------------------------------------------===//
927
928void CFDictionaryAddValue(CFMutableDictionaryRef, void *, void *);
929
930// <rdar://problem/6539791>
931void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) {
932  CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
933  CFDictionaryAddValue(y, key, x);
934  CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet
935  signed z = 1;
936  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
937  if (value) {
938    CFDictionaryAddValue(x, val_key, (void*)value); // no-warning
939    CFRelease(value);
940    CFDictionaryAddValue(y, val_key, (void*)value); // no-warning
941  }
942}
943
944// <rdar://problem/6560661>
945// Same issue, except with "AppendValue" functions.
946void rdar_6560661(CFMutableArrayRef x) {
947  signed z = 1;
948  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
949  // CFArrayAppendValue keeps a reference to value.
950  CFArrayAppendValue(x, value);
951  CFRelease(value);
952  CFRetain(value);
953  CFRelease(value); // no-warning
954}
955
956// <rdar://problem/7152619>
957// Same issue, excwept with "CFAttributeStringSetAttribute".
958void rdar_7152619(CFStringRef str) {
959  CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0);
960  CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string);
961  CFRelease(string);
962  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
963  CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number);
964  [number release];
965  [number retain];
966  CFRelease(attrString);  
967}
968
969//===----------------------------------------------------------------------===//
970// Test of handling CGGradientXXX functions.
971//===----------------------------------------------------------------------===//
972
973void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
974                  CGPoint myEndPoint) {
975  size_t num_locations = 6;
976  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
977  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
978     x,  // Start color
979    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
980    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
981    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
982    255.0/255.0,255.0/255.0, 255.0/255.0, x,
983    255.0/255.0,255.0/255.0, 255.0/255.0, x
984  }; // End color
985  
986  CGGradientRef myGradient =
987    CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}}
988      components, locations, num_locations);
989
990  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
991                              0);
992  CGGradientRelease(myGradient);
993}
994
995void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
996                  CGPoint myEndPoint) {
997  size_t num_locations = 6;
998  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
999  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
1000     x,  // Start color
1001    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
1002    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
1003    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
1004    255.0/255.0,255.0/255.0, 255.0/255.0, x,
1005    255.0/255.0,255.0/255.0, 255.0/255.0, x
1006  }; // End color
1007  
1008  CGGradientRef myGradient =
1009   CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}}
1010
1011  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
1012                              0);
1013}
1014
1015//===----------------------------------------------------------------------===//
1016// <rdar://problem/7299394> clang false positive: retained instance passed to
1017//                          thread in pthread_create marked as leak
1018//
1019// Until we have full IPA, the analyzer should stop tracking the reference
1020// count of objects passed to pthread_create.
1021//
1022//===----------------------------------------------------------------------===//
1023
1024struct _opaque_pthread_t {};
1025struct _opaque_pthread_attr_t {};
1026typedef struct _opaque_pthread_t *__darwin_pthread_t;
1027typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t;
1028typedef __darwin_pthread_t pthread_t;
1029typedef __darwin_pthread_attr_t pthread_attr_t;
1030
1031int pthread_create(pthread_t *, const pthread_attr_t *,
1032                   void *(*)(void *), void *);
1033
1034void *rdar_7299394_start_routine(void *p) {
1035  [((id) p) release];
1036  return 0;
1037}
1038void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) {
1039  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1040  pthread_create(thread, attr, rdar_7299394_start_routine, number);
1041}
1042void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) {
1043  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1044}
1045
1046//===----------------------------------------------------------------------===//
1047// <rdar://problem/7283567> False leak associated with call to 
1048//                          CVPixelBufferCreateWithBytes ()
1049//
1050// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and
1051// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the
1052// pixel buffer object.  These test cases show how the analyzer stops tracking
1053// the reference count for the objects passed for this argument.  This
1054// could be made smarter.
1055//===----------------------------------------------------------------------===//
1056
1057typedef int int32_t;
1058typedef UInt32 FourCharCode;
1059typedef FourCharCode OSType;
1060typedef uint64_t CVOptionFlags;
1061typedef int32_t CVReturn;
1062typedef struct __CVBuffer *CVBufferRef;
1063typedef CVBufferRef CVImageBufferRef;
1064typedef CVImageBufferRef CVPixelBufferRef;
1065typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress );
1066
1067extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1068            size_t width,
1069            size_t height,
1070            OSType pixelFormatType,
1071            void *baseAddress,
1072            size_t bytesPerRow,
1073            CVPixelBufferReleaseBytesCallback releaseCallback,
1074            void *releaseRefCon,
1075            CFDictionaryRef pixelBufferAttributes,
1076                   CVPixelBufferRef *pixelBufferOut) ;
1077
1078typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] );
1079
1080extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator,
1081        size_t width,
1082        size_t height,
1083        OSType pixelFormatType,
1084        void *dataPtr,
1085        size_t dataSize,
1086        size_t numberOfPlanes,
1087        void *planeBaseAddress[],
1088        size_t planeWidth[],
1089        size_t planeHeight[],
1090        size_t planeBytesPerRow[],
1091        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1092        void *releaseRefCon,
1093        CFDictionaryRef pixelBufferAttributes,
1094        CVPixelBufferRef *pixelBufferOut) ;
1095
1096extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1097            size_t width,
1098            size_t height,
1099            OSType pixelFormatType,
1100            void *baseAddress,
1101            size_t bytesPerRow,
1102            CVPixelBufferReleaseBytesCallback releaseCallback,
1103            void *releaseRefCon,
1104            CFDictionaryRef pixelBufferAttributes,
1105                   CVPixelBufferRef *pixelBufferOut) ;
1106
1107CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height,
1108                      OSType pixelFormatType, void *baseAddress,
1109                      size_t bytesPerRow,
1110                      CVPixelBufferReleaseBytesCallback releaseCallback,
1111                      CFDictionaryRef pixelBufferAttributes,
1112                      CVPixelBufferRef *pixelBufferOut) {
1113
1114  // For the allocated object, it doesn't really matter what type it is
1115  // for the purpose of this test.  All we want to show is that
1116  // this is freed later by the callback.
1117  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1118  
1119  return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType,
1120                                baseAddress, bytesPerRow, releaseCallback,
1121                                number, // potentially released by callback
1122                                pixelBufferAttributes, pixelBufferOut) ;
1123}
1124
1125CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height,
1126        OSType pixelFormatType, void *dataPtr, size_t dataSize,
1127        size_t numberOfPlanes, void *planeBaseAddress[],
1128        size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[],
1129        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1130        CFDictionaryRef pixelBufferAttributes,
1131        CVPixelBufferRef *pixelBufferOut) {
1132    
1133    // For the allocated object, it doesn't really matter what type it is
1134    // for the purpose of this test.  All we want to show is that
1135    // this is freed later by the callback.
1136    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1137
1138    return CVPixelBufferCreateWithPlanarBytes(allocator,
1139              width, height, pixelFormatType, dataPtr, dataSize,
1140              numberOfPlanes, planeBaseAddress, planeWidth,
1141              planeHeight, planeBytesPerRow, releaseCallback,
1142              number, // potentially released by callback
1143              pixelBufferAttributes, pixelBufferOut) ;
1144}
1145
1146//===----------------------------------------------------------------------===//
1147// <rdar://problem/7358899> False leak associated with 
1148//  CGBitmapContextCreateWithData
1149//===----------------------------------------------------------------------===//
1150typedef uint32_t CGBitmapInfo;
1151typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data);
1152    
1153CGContextRef CGBitmapContextCreateWithData(void *data,
1154    size_t width, size_t height, size_t bitsPerComponent,
1155    size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1156    CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo);
1157
1158void rdar_7358899(void *data,
1159      size_t width, size_t height, size_t bitsPerComponent,
1160      size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1161      CGBitmapContextReleaseDataCallback releaseCallback) {
1162
1163    // For the allocated object, it doesn't really matter what type it is
1164    // for the purpose of this test.  All we want to show is that
1165    // this is freed later by the callback.
1166    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1167
1168  CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}}
1169    bytesPerRow, space, bitmapInfo, releaseCallback, number);
1170}
1171
1172//===----------------------------------------------------------------------===//
1173// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to
1174//  start before '_' when determining Cocoa fundamental rule
1175//
1176// Previously the retain/release checker just skipped prefixes before the
1177// first '_' entirely.  Now the checker honors the prefix if it results in a
1178// recognizable naming convention (e.g., 'new', 'init').
1179//===----------------------------------------------------------------------===//
1180
1181@interface RDar7265711 {}
1182- (id) new_stuff;
1183@end
1184
1185void rdar7265711_a(RDar7265711 *x) {
1186  id y = [x new_stuff]; // expected-warning{{leak}}
1187}
1188
1189void rdar7265711_b(RDar7265711 *x) {
1190  id y = [x new_stuff]; // no-warning
1191  [y release];
1192}
1193
1194//===----------------------------------------------------------------------===//
1195// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a
1196//                          retained reference
1197//===----------------------------------------------------------------------===//
1198
1199@interface NSCursor : NSObject
1200+ (NSCursor *)dragCopyCursor;
1201@end
1202
1203void rdar7306898(void) {
1204  // 'dragCopyCursor' does not follow Cocoa's fundamental rule.  It is a noun, not an sentence
1205  // implying a 'copy' of something.
1206  NSCursor *c =  [NSCursor dragCopyCursor]; // no-warning
1207  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1208}
1209
1210//===----------------------------------------------------------------------===//
1211// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class
1212// directly is not likely what the user intended
1213//===----------------------------------------------------------------------===//
1214
1215@interface RDar7252064 : NSObject @end
1216void rdar7252064(void) {
1217  [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1218  [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1219  [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1220  [NSAutoreleasePool drain]; // expected-warning{{method '+drain' not found}} expected-warning{{The 'drain' message should be sent to instances of class 'NSAutoreleasePool' and not the class directly}}
1221}
1222
1223//===----------------------------------------------------------------------===//
1224// Tests of ownership attributes.
1225//===----------------------------------------------------------------------===//
1226
1227typedef NSString* MyStringTy;
1228
1229@protocol FooP;
1230
1231@interface TestOwnershipAttr : NSObject
1232- (NSString*) returnsAnOwnedString  NS_RETURNS_RETAINED; // no-warning
1233- (NSString*) returnsAnOwnedCFString  CF_RETURNS_RETAINED; // no-warning
1234- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning
1235- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning
1236- (NSString*) newStringNoAttr;
1237- (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to methods that return an Objective-C object}}
1238- (id) pseudoInit NS_CONSUMES_SELF NS_RETURNS_RETAINED;
1239+ (void) consume:(id) NS_CONSUMED x;
1240+ (void) consume2:(id) CF_CONSUMED x;
1241@end
1242
1243static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to functions and methods}}
1244
1245void test_attr_1(TestOwnershipAttr *X) {
1246  NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}}
1247}
1248
1249void test_attr_1b(TestOwnershipAttr *X) {
1250  NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}}
1251}
1252
1253void test_attr1c(TestOwnershipAttr *X) {
1254  NSString *str = [X newString]; // no-warning
1255  NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}}
1256}
1257
1258void testattr2_a() {
1259  TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // expected-warning{{leak}}
1260}
1261
1262void testattr2_b() {
1263  TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit];  // expected-warning{{leak}}
1264}
1265
1266void testattr2_c() {
1267  TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // no-warning
1268  [x release];
1269}
1270
1271void testattr3() {
1272  TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning
1273  [TestOwnershipAttr consume:x];
1274  TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning
1275  [TestOwnershipAttr consume2:y];
1276}
1277
1278void consume_ns(id NS_CONSUMED x);
1279void consume_cf(id CF_CONSUMED x);
1280
1281void testattr4() {
1282  TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning
1283  consume_ns(x);
1284  TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning
1285  consume_cf(y);
1286}
1287
1288
1289@interface MyClassTestCFAttr : NSObject {}
1290- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED;
1291- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED;
1292- (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED;
1293- (CFDateRef) newCFRetainedAsCFNoAttr;
1294- (NSDate*) alsoReturnsRetained;
1295- (CFDateRef) alsoReturnsRetainedAsCF;
1296- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED;
1297@end
1298
1299CF_RETURNS_RETAINED
1300CFDateRef returnsRetainedCFDate()  {
1301  return CFDateCreate(0, CFAbsoluteTimeGetCurrent());
1302}
1303
1304@implementation MyClassTestCFAttr
1305- (NSDate*) returnsCFRetained {
1306  return (NSDate*) returnsRetainedCFDate(); // No leak.
1307}
1308
1309- (CFDateRef) returnsCFRetainedAsCF {
1310  return returnsRetainedCFDate(); // No leak.
1311}
1312
1313- (CFDateRef) newCFRetainedAsCF {
1314  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease];
1315}
1316
1317- (CFDateRef) newCFRetainedAsCFNoAttr {
1318  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}}
1319}
1320
1321- (NSDate*) alsoReturnsRetained {
1322  return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}}
1323}
1324
1325- (CFDateRef) alsoReturnsRetainedAsCF {
1326  return returnsRetainedCFDate(); // expected-warning{{leak}}
1327}
1328
1329
1330- (NSDate*) returnsNSRetained {
1331  return (NSDate*) returnsRetainedCFDate(); // no-warning
1332}
1333@end
1334
1335//===----------------------------------------------------------------------===//
1336// Test that leaks post-dominated by "panic" functions are not reported.
1337//
1338// <rdar://problem/5905851> do not report a leak when post-dominated by a call
1339// to a noreturn or panic function
1340//===----------------------------------------------------------------------===//
1341
1342void panic() __attribute__((noreturn));
1343void panic_not_in_hardcoded_list() __attribute__((noreturn));
1344
1345void test_panic_negative() {
1346  signed z = 1;
1347  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);  // expected-warning{{leak}}
1348}
1349
1350void test_panic_positive() {
1351  signed z = 1;
1352  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1353  panic();
1354}
1355
1356void test_panic_neg_2(int x) {
1357  signed z = 1;
1358  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}}
1359  if (x)
1360    panic();
1361}
1362
1363void test_panic_pos_2(int x) {
1364  signed z = 1;
1365  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1366  if (x)
1367    panic();
1368  if (!x) {
1369    // This showed up in <rdar://problem/7796563>, where we silently missed checking
1370    // the function type for noreturn.  "panic()" is a hard-coded known panic function
1371    // that isn't always noreturn.
1372    panic_not_in_hardcoded_list();
1373  }
1374}
1375
1376//===----------------------------------------------------------------------===//
1377// Test uses of blocks (closures)
1378//===----------------------------------------------------------------------===//
1379
1380void test_blocks_1_pos(void) {
1381  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1382  ^{}();
1383}
1384
1385void test_blocks_1_indirect_release(void) {
1386  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1387  ^{ [number release]; }();
1388}
1389
1390void test_blocks_1_indirect_retain(void) {
1391  // Eventually this should be reported as a leak.
1392  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1393  ^{ [number retain]; }();
1394}
1395
1396void test_blocks_1_indirect_release_via_call(void) {
1397  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1398  ^(NSObject *o){ [o release]; }(number);
1399}
1400
1401void test_blocks_1_indirect_retain_via_call(void) {
1402  // Eventually this should be reported as a leak.
1403  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1404  ^(NSObject *o){ [o retain]; }(number);
1405}
1406
1407//===--------------------------------------------------------------------===//
1408// Test sending message to super that returns an object alias.  Previously
1409// this caused a crash in the analyzer.
1410//===--------------------------------------------------------------------===//
1411
1412@interface Rdar8015556 : NSObject {} @end
1413@implementation Rdar8015556
1414- (id)retain {
1415  return [super retain];
1416}
1417@end
1418
1419// <rdar://problem/8272168> - Correcly handle Class<...> in Cocoa Conventions
1420// detector.
1421
1422@protocol Prot_R8272168 @end
1423Class <Prot_R8272168> GetAClassThatImplementsProt_R8272168();
1424void r8272168() {
1425  GetAClassThatImplementsProt_R8272168();
1426}
1427
1428// Test case for <rdar://problem/8356342>, which in the past triggered
1429// a false positive.
1430@interface RDar8356342
1431- (NSDate*) rdar8356342:(NSDate *)inValue;
1432@end
1433
1434@implementation RDar8356342
1435- (NSDate*) rdar8356342:(NSDate*)inValue {
1436  NSDate *outValue = inValue;
1437  if (outValue == 0)
1438    outValue = [[NSDate alloc] init]; // no-warning
1439
1440  if (outValue != inValue)
1441    [outValue autorelease];
1442
1443  return outValue;
1444}
1445@end
1446
1447// <rdar://problem/8724287> - This test case previously crashed because
1448// of a bug in BugReporter.
1449extern const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key);
1450typedef struct __CFError * CFErrorRef;
1451extern const CFStringRef kCFErrorUnderlyingErrorKey;
1452extern CFDictionaryRef CFErrorCopyUserInfo(CFErrorRef err);
1453static void rdar_8724287(CFErrorRef error)
1454{
1455    CFErrorRef error_to_dump;
1456
1457    error_to_dump = error;
1458    while (error_to_dump != ((void*)0)) {
1459        CFDictionaryRef info;
1460
1461        info = CFErrorCopyUserInfo(error_to_dump); // expected-warning{{Potential leak of an object allocated on line}}
1462
1463        if (info != ((void*)0)) {
1464        }
1465
1466        error_to_dump = (CFErrorRef) CFDictionaryGetValue(info, kCFErrorUnderlyingErrorKey);
1467    }
1468}
1469
1470// <rdar://problem/9234108> - Make sure the model applies cf_consumed
1471// correctly in argument positions besides the first.
1472extern void *CFStringCreate(void);
1473extern void rdar_9234108_helper(void *key, void * CF_CONSUMED value);
1474void rdar_9234108() {
1475  rdar_9234108_helper(0, CFStringCreate());
1476}
1477
1478// <rdar://problem/9726279> - Make sure that objc_method_family works
1479// to override naming conventions.
1480struct TwoDoubles {
1481  double one;
1482  double two;
1483};
1484typedef struct TwoDoubles TwoDoubles;
1485
1486@interface NSValue (Mine)
1487- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles __attribute__((objc_method_family(init)));
1488@end
1489
1490@implementation NSValue (Mine)
1491- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles
1492{
1493  return [self init];
1494}
1495@end
1496
1497void rdar9726279() {
1498  TwoDoubles twoDoubles = { 0.0, 0.0 };
1499  NSValue *value = [[NSValue alloc] _prefix_initWithTwoDoubles:twoDoubles];
1500  [value release];
1501}
1502
1503// <rdar://problem/9732321>
1504// Test camelcase support for CF conventions.  While Core Foundation APIs
1505// don't use camel casing, other code is allowed to use it.
1506CFArrayRef camelcase_create_1() {
1507  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1508}
1509
1510CFArrayRef camelcase_createno() {
1511  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}}
1512}
1513
1514CFArrayRef camelcase_copy() {
1515  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1516}
1517
1518CFArrayRef camelcase_copying() {
1519  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}}
1520}
1521
1522CFArrayRef copyCamelCase() {
1523  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1524}
1525
1526CFArrayRef __copyCamelCase() {
1527  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1528}
1529
1530CFArrayRef __createCamelCase() {
1531  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1532}
1533
1534CFArrayRef camel_create() {
1535  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1536}
1537
1538
1539CFArrayRef camel_creat() {
1540  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}}
1541}
1542
1543CFArrayRef camel_copy() {
1544  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1545}
1546
1547CFArrayRef camel_copyMachine() {
1548  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1549}
1550
1551CFArrayRef camel_copymachine() {
1552  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}}
1553}
1554
1555// rdar://problem/8024350
1556@protocol F18P
1557- (id) clone;
1558@end
1559@interface F18 : NSObject<F18P> @end
1560@interface F18(Cat)
1561- (id) clone NS_RETURNS_RETAINED;
1562@end
1563
1564@implementation F18
1565- (id) clone {
1566  return [F18 alloc];
1567}
1568@end
1569
1570// Radar 6582778.
1571void rdar6582778(void) {
1572  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
1573  CFTypeRef vals[] = { CFDateCreate(0, t) }; // expected-warning {{leak}}
1574}
1575
1576CFTypeRef global;
1577
1578void rdar6582778_2(void) {
1579  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
1580  global = CFDateCreate(0, t); // no-warning
1581}
1582
1583// <rdar://problem/10232019> - Test that objects passed to containers
1584// are marked "escaped".
1585
1586void rdar10232019() {
1587  NSMutableArray *array = [NSMutableArray array];
1588
1589  NSString *string = [[NSString alloc] initWithUTF8String:"foo"];
1590  [array addObject:string];
1591  [string release];
1592
1593  NSString *otherString = [string stringByAppendingString:@"bar"]; // no-warning
1594  NSLog(@"%@", otherString);
1595}
1596
1597void rdar10232019_positive() {
1598  NSMutableArray *array = [NSMutableArray array];
1599
1600  NSString *string = [[NSString alloc] initWithUTF8String:"foo"];
1601  [string release];
1602
1603  NSString *otherString = [string stringByAppendingString:@"bar"]; // expected-warning {{Reference-counted object is used after it is release}}
1604  NSLog(@"%@", otherString);
1605}
1606
1607